Carbureter for gas-engines.



M. m. MUSGRAVE. GAEBUBETER FOB GAB ENGINES.

APPLIOATION FILED HOV-1B. 19 11.

Patented N0v.5 ,1912.

1NVENTOR5 MARK Museamz WITNESSES 1,043,. are.

brush s rns CARBURETER FOR GAS-ENGIITES.

T all whom it may concern.

Be it known that we, Mann Museum's and CLAUDE E. hdYTStHiM E, citizens of the United States, residing at Pittsburg, in the county of Crawford and State of Kansas, have invented certain new and useful Improvements in Carburetors for Gas-Engines, of which the following is a specification, reference being had therein to the accompanying drawing. I

This invention relates to a carbureter for gas engines.

The principal object of the invention is to provide an improved form oi carburetor wherein the gasolcne passing into the carbureting chamber for the air and hydrocarbon will be heated and the carburet-ing chamber keptwarm without making it necessary to heat the carbureter by external means as is frequently necessary.

Another object of the invention is to provide awater jacketed carbureter with an electric resistance coil arranged to heat the water in the water jacket, the latter surrounding the chamber wherein the incoming air is carliiuretcd.

A third object of the invention is to provide means for regulating the mixture of air and hydrocarbon.

\Vit-h the above and other objects in view, the invention consists in general of certain novel features of construction, combinations and arrangements of parts as will be hereinafter 'fully described, illustrated in the accompanying drawings,' and specifically claimed.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and :-Figure l is a vertical media-n section through a carbureter constructed in accordance with this invention. Fig. 2 is a'partial detail view onthe line 22, Fig. 1. Fig. 3 is an exterior view-0f one of the auxiliary air valves. Fig. 1 is a bottom view of a second air valve, certain of the parts being omitted better to show certain features of the device. 'Fig. 5 is a detail side elevation showing the arrangement for plugging certain passages in the device after the same have been drilled;

The body of the carbureter comprises-a cylindrical casing around the side walls Specification of Letters Patent.

Patented Nov. 5, 11912.

Application filed November 18, 1911. Serial No. 661.065.

of which extends an annular trough 11, the

upper end whereof is adapted to be closed.

by means of a cover plate 12 secured by screws 13. Leading downward from the trough 11 is a passage 14: which opens into a horizontal passage 15. This latter extends to the center of the casing and opens into a tube 16 which extends upward and terminates at about the center of the vertical height of this casing 10. The lower end of the passage 16 extends downwardly below the bottom of the casing 10 in a tube 17 and threaded to this tube is a pet cock 18 of the ordinary type. Near the periphery of the trough 1]. is an intake chamber 18 whereto is connected a feed pipe 19 leading from any suitable source of gasolene supply. Above the intake 18 is a port 20 which forms a seat for a valve 21. The upper end of-this valve is extended to form a stem 22 which passes through a bushing 23 in a guide 2 1'. e To the end of the stem 22 which extends above the bushing is secured one arm of a lever 25 which 1s pivoted to a bracket 26 securedto the wall of the casing 10, and the other arms of this lever 25 are secured to a fioat'27 by any suitable means not deemed necessary here to be shown.

The bottom of the'casing 10 is slotted as at 28 and below the bottom there is provided a valve plate 29 having a centrally disposed opening 30 which fits closely around the tube 17 and is held in position against the bottom of the casing 10 by suitable nuts 31. This valve plate is also slotted as at 82 with slots corresponding to those in the bottom of the casing 10. In Fig. 4: the slots 28 and 32 are shown as coincident but from an inspection of that figure it will be obvious that the spring 33 which has its ends connected to the arms 34,011 the plate 29 and the arm 85 on the wall of the casing 10 will draw the plate around thus reducing the size of the openings; In order to limit the amount of this reduction a screw 36 is provided which works in a nut 37 fixed upon a bracket 38. By this means the size otthe openings .between the outer'air and themsing 10 maybe limited. 1

\Vithin the casing 1t) is an annular. water -jacket 39 the inside walls of which are curved inwardly as at 40 so that withinthe casing 10 there is formed a species of tube, 'i'hich is wide at both ends and narrow in the middle. This water jacket furthermore has an annular pocket 41 surrounding the outer middle port-ion thereof and in this annular pocket is mounted a resistance coil 42 so arranged that when current passes therethrough the coil will be heated to a sufficient degree to war-many water which may be in the water jacket. The ends of this coil are connected to binding posts 43, one of which is connected by means of a wire 44 with a switch 45. From the other pole or this switch a wire 46 extends to a suitable battery 47 which is connected by a wire 48 with the remaining binding post 43. A suitably threaded opening is made at the lower part of the outside wall of the casing 10 and connected with this opening is a water supply pipe 49 wherein is a valve 50 which is controlled by means of a lever 51 working overa quadrant 52, the lever 51 being provided with the usual latch 53. By this means the rate of influx of water is controlled. At a point preferably opposite the water supply pine 49 and at the upper portion of the water jacket other threaded openings are made in the outer wall of the jacket and casing 10 and secured'in these openings is a waste water pipe;

Seated upon the top of the water jacket and the side wall of the casing 10 is a mixing chamber 55 which is open at the bottom except for the fact that across this bottom,

extends a bar 56 having a centrally disposed enlarged portion 57 provided with a guide openin 58 concentric therewith. This mixing chamber 55 has its side walls 59 flat and provided with bosses 60 through which extend valve stems 61. Surrounding the bosses 60 are radial slots 62 formed -in the side walls 59 and covering these slots on the inside of each side wall is a valve 63 mounted on the respective stem 61 is threaded for the reception of adjusting and jam nuts 64 between which and the respective boss 60 is a spring 65 which normally tend to keep the valve 63 closed against its seat. For the purpose of preventing the rotation of the valve 63 a pin guide 66 is threaded through each side wall 59 and extends through an opening of suitable dimensions formed in the respective valve so that the valve may slide on this pin guide without rotating thereon.

Above the mixing chamber the portion of the device forming this chamber is carried up in a delivery pipe 67 having a suitable flange 68 at its upper end f r connection to the supply pipe 69 of an internal com bustion engine. Within this delivery pipe 67 is a valve 70 preteral'ly oi the" butterfly type. Extending downward through the top of the mixing chamber and through the 65 opening 58 is a needle valve 71 provided with flow upward into the trough 11 until the float 27 rises suificiently high to close the port 20. It will be obvious that the level of the gasolene in the chamber 16 will be that of the trough 11. Upon movement of the piston in the engine suction will be created by reason of partial vacuum in the' chamber 55 and casing 10, and this will causean in-- rush of air through the ports 28 and 32 and as this air is drawn violently upward the gasolene in the tube 16 will be aspirated and mingled with the incoming air. At this time the switch 45 will have been closed so that a current will flow through the heating coil 42 and heat the water in the water jacket and gasolene in annular trough. This incoming air will thus be heated from the heat of the water jacket and the gasolene will be effectively carburized. As the car burized air flows upward into the chamber 55 if the engine is running too rapidly so that the carburization is too high the valves 63 will be opened. It will be obvious that one'of these valves may be adjusted at a less vacuum than the other. The now mixed air and carburized air will pass through the de livery tube 67 to the engine. It will be obvious that proper adjustment of the needle valve 71 will tend to regulate the amount of gasolene aspirated and that adjustment of the screw 36 will regulate the amountof air taken in the casing-10x By nearly closing the valve 29 a very light degree of carburization may be obtained; by opening this valve to its fullest extent, as shown in Fig. 4, the valves 63 will not-open and an ex tremely rich mixture will be obtained.

There has thus been provided a simple and eflicient device of the kind described and for the purpose specified.

It is obvious that many minor changes may be made in the form and construction of this invention without departing from the material principles thereof, and 1 t is therefore not wished to confine the inventlon to the exact form herein shown but it is wished to include all such as properly come within the scope of the appended claims.

What. is claimed as new, is l. Ina carburetor, a cylindrical bodvpo w tion, an annular water jacket fitted within said body portion and provided on its exterior with an annular groove whereby an annular ichamber is formed between the wall 2.1m a carbureter, a cylindrical body p0r-- taneously heat the water jacketand the oil tion, an annular water jacket fitted within supply chamber.

said body l))0 rtion and forming a carbu- In testimony whereof we hereunto aflix regindg chailm er, said water jacket being proour signatures in presence of two Witnesses.

.vi e wit an annu ar roove on its exterior whereby an annular ch amber is formed be- KVE tween the wall of the body portion and said water jacket, an oil supply chamber sur- Witnesses:

rounding said body, and an electric heating A. M. BUMANN, 10 coil held within the annular groove to simul- T. M. WOOD. 

